A mixture of BaO and CaO weighing 2.2120g is transformed into mixed sulfates, BaSO4 and CaSO4 weighing 5.0230g. Calculate the number of grams CaO and

Q: Calculate the weight of lime (CaO) obtained by heating 2000kg of 95% pure lime stone (CaCO3).

A: Given, 2000kg of 95% pure lime stone

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A:

Q: Solutions of cyanide salts are still widely used in the extraction of gold metal from its ores. It…

A: Here, we need to determine the percentage purity of the potassium cyanide in the sample.

Q: The hydrated salt, MY2·xH2O, was heated strongly in a crucible to remove all the water molecules of…

A: (i) Calculation of mass of hydrated salt: Calculation of mass of anhydrous salt: Mass of water in…

Q: Prepared 1 M of HCL in 1000 ml, that density is 1.19 g/cm3 and percentage ?w/w is 37 %, Mwt is 36.5…

A:

Q: 25 ppm of CaCO3 was found in the water sample obtained on the lake in the nearby town. Calculate the…

A: Given :  Concentration of CaCO3 = 25 ppm  Volume of water sample = 10 litres  Density of water = 997…

Q: The following mixtures are completely mixed to form mixture D: Mixture Mass (kg) % NaCI % KCI % H2O…

A: The solution is given in below image file: From the given information, It is know that mass of each…

Q: A coal sample having the following composition: C = 80%, H = 4%, O = 3%, S = 2%, N = 3%, ash = 5%…

A: Here, we are provided with 1 kg of a coal which consists of 80% of carbon, 4% of hydrogen, 3% of…

Q: About 200 grams of glucose was fermented with 20 grams of yeast inside a fermenting vessel for 2…

A: Given 200 g of glucose give ethanol  Actual yield = 84.5mL  We have to find actual yield

Q: The ingredients in herbicides and pesticides must be carefully monitored. Arsenic in a pesticide…

A: Gravimetric factor: ratio of grams of element forms and grams of compound which used to form…

Q: Aspirin yield You record the following data during the Qualitative and Quantitative Characterization…

A:

Q: The hydrated salt, MY3-xH0, was heated strongly in a crucible to remove all the water molecules of…

A: Hydrate = MY3.xH2O Salt = MY3 (MM = 230.99 g/mol) The data for this experiment are given in the…

Q: An alloy is found to be 41.8% Zn and the rest is Cu. If 15.0g of Cu is added to 45.0g of this alloy,…

A: To calculate percentage of Cu in a Zn-Cu alloy after the addition of fresh Cu to the already…

Q: What mass of KNO3 [MW=101] is needed to prepare 250.0mL of 0.450 M KNO3 in water?

A:

Q: Sulfuric acid can be manufactured using the reaction: 2S(s) + 3 O2(g) + 2 H2O(l) -> 2 H2SO4 (aq)…

A: We have to calculate the mass of sulphuric acid produced.

Q: A chemist carries out the reaction below and obtains 3.45g of iron Fe (Fe, MW=55.845g/mol). Fill in…

A:

Q: (ii) Calculate the moles and mass of Zn(NO3)2 in 29.3 cm3 of 0.952 moldm solution Relative formula…

A:

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A: Given :- volume of solution = 350 cm3 molarity of potassium dichromate solution = 5.16 M or 5.16…

Q: 6. In the molecular weight determination by the Dumas method, as illustrated below, several grams of…

A: The mass of the bulb filled with vapor was 36.127 g;The mass of the empty (evacuated) bulb was…

Q: About 300 grams of glucose was fermented with 20 grams of yeast inside a fermenting vessel for 2…

A: we first need to calculate the theoretical yield of ethyl alcohol. and we know-   Density=Mass…

Q: A 163.0 mL aqueous solution of 50.0 mM CoCl2 is combined with 532.0 mL of aqueous 68.0 mM K3PO4. If…

A: Given:   Molarity of CoCl2=50.0 mM ( 1mM = 0.001 M)                                   = (50.0×0.001)…

Q: Calcium peroxytoctahydrate is synthesized according to the following reaction. During the synthesis…

A: Given data:  The given Chemical reaction is The weight of calcium carbonate taken=3.5 g The…

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A: We know that, molarity is an unit of concentration. It is defined as the number of moles of solute…

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A:

Q: Sulfuric acid can be manufactured using the reaction: 2 S(s) + 3 O2(g) + 2 H2O(l) → 2 H2SO4(aq) If…

A: Given : 2 S(s) + 3 O2(g) + 2 H2O(l) → 2 H2SO4(aq) Sulfur consumed = 65 metric tons To find : metric…

Q: You are supplied with 1150 kg ethanol (C2H5OH), together with methanol (CH3OH), potassium hydroxide…

A: Given that -  Mass of Ethanol used = 1150 kg = 1150000 g  When ethanol is treated with Oxidising…

Q: hat is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3 solution…

A: Given : Volume of solution =  350 cm3  Concentration = 5.16 M

Q: A 800.0 mL aqueous solution of 93.0 mM CoCl2 is combined with 399.0 mL of aqueous 54.0 mM K3PO4. If…

A: Given, Note: 1 mM = 0.001 M Molarity of CoCl2 solution = 93.0 mM = 93.0 × 0.001 M = 0.093 M = 0.093…

Q: About 200 grams of glucose was fermented with 20 grams of yeast inside a fermenting vessel for 2…

A:

Q: 1) KOH and NaOH are dissolved in water to form a 2.48 molar solution. If 42.9 g of NaOH are used and…

A:

Q: Two gas mixtures, A and B, are compared for their carbon dioxide content. Mixture A has 50%…

A: Gas-A is given moles basis,so we need to convert to mass basis, by using molar mass of the…

Q: Calculate the percent composition of sand in the mixture using the mass of the recovered sand…

A: First, the % composition of sand in the given mixture is calculated by dividing the sand weight by…

Q: What mass of concentrated sulfuric  ( a 95% solution of H2SO4 by mas) is needed to prepare 500. g of…

A:

Q: About 200 grams of glucose was fermented with 20 grams of yeast inside a fermenting vessel for 2…

A: First we have to calculate the theoretical yield by using the balanced reaction. After getting the…

Q: 0.004 C8H7NO3, 15mL ethanol, 0.002mol NaBH4 was used. HCl was used to acidify. It was then extracted…

A:

Q: Volume of Prepared Julce (ml) Servings of Prepared Julce Mass of Total Cost Packaging (9) of Julce…

A: We are given the mass of packaging in the 2nd column, number of servings in the 4th column and total…

Q: Urea, CH4N2O, is produced by the reaction between ammonia and carbon dioxide, as shown by the…

A: The reaction given is 2 NH3 + CO2 ------> CH4N2O + H2O  a) Mass of urea to be produced = 6 Kg =…

Q: Zinc and magnesium react with hydrochloric acid to produce the metal chlorides and hydrogen gas. A…

A: The reaction of Zn and Mg with HCl is – Zn + 2HCl →ZnCl2 + H2Mg + 2HCl →MgCl2 + H2

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A: Mass can be find by using the formula of concentration.   Just put the values of given quantities,…

Q: Consider a blend of mass 5g formed from 2.2 g of C12H24 and 2.8g of C998H1000 paraffin's:, What are…

A: Number average molar mass  Mathematical expression  Mn =∑Mii∑ini Weight Average molar mass…

Q: Mass of Na2CO3.H2O (g) = 2.12g (g) Mass of the CaCl2.2H2O (g) = 1.98g Mass of the top funnel +…

A: Given data, Mass of Na2CO3.H2O=2.12gMass of CaCl2.2H2O=1.98gMass of CaCO3…

Q: Balance the following combustion reaction and report the sum of the stoichiometric coefficients: __…

A: A balanced chemical equation means that the number of sameatoms on both sides of the chemical…

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A:

Q: Uploaded is an example from Chapter 8 in my chemistry book. If you could break down the how and why…

A: The mole ratio in any reaction is can be find using the balancing coefficients because in any…

Q: 1 gram mixture of CaCO3 and SrCO3 is ignited and converted to CaO and Sro. The mass of kides mixture…

A: Given mass of mixture of CaCO3 and SrCO3 is 1g. Given mass of mixture of oxides is 0.6 g. Given…

Q: Write the balanced equation for the reaction of aqueous Pb(ClO3)2Pb(ClO3)2 with aqueous NaI.NaI.…

A: Given information: Volume of Pb(ClO3)2 = 1.50 L Concentration of NaI = 0.250 M Volume of NaI = 0.100…

Q: 6. In the molecular weight determination by the Dumas method, as illustrated below, several grams of…

A: The mass of the bulb filled with vapor was 36.127 g;The mass of the empty (evacuated) bulb was…

Q: A solution of sucralose (molar mass= 397.6 g/mol) was made dissolving 27.53 g of sucralose into 895…

A: Molarity is measure of concentration of solution. Here given  values are, Mass of sucralose= 27.53 g…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".